Pumping-head.



s. M.- PUiTON. PUMPING HEAD. APPLICATION FILED FEB. 2]., 191 0. I I 991%5, Patented July 11,1911.

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o N VE N TOR fw/a Attorney WITNESS s. r

s. M. FULTON.

PUMPING HEAD.

APPLICATION FILED 11111.21, 1910.

997,445. Patented July 11,1911.

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W [TNESSES [NVENTOR I Alforzizey SAMUEL M. FULTON, OF POMONA, CALIFORNIA.

PUMPING-HEAD.

Specification of Letters Patent.

Application filed February 21, 1910. Serial No. 545,116. 1

To all whom at may concern:

Be it known that I, SAMUEL M. FULTON, a citizen 'of the United States, residing at Pomona, county of Los Angeles, State of California, have invented certain new and This invention relates useful Improvements in Pumping-Heads, of which the following is a specification, reference being had therein to the accompanying drawing. Y

to a pump head and particularly to a construction adapted to operate a plurality of pistons.

' The invention has for an object to pro vide a novel and improved construction having upon a single shaft a plurality of driving gears each provided upon their'ad jacent faces with a cam adapted to actuate a walking beam and upon their outer faces with a similar cam. I

Another and further object of the invention is to provide upon the driving shaft cams disposed within oval yokes connected to the pump pistons, said cams being disposed to produce alternate movement thereof.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel featuresthereof definedby the appended claims. 4

In the drawings'Figure l is a vertical section through the invention as applied to a pump on line 1-1 of Fig. 1; Fig. 2 is an elevation at the left end of Fig.1; Fig. 3 is an elevation of the pump head; Fig. 4. is

an enlarged horizontal section through the driving gears with the beams in partial elevation; and Fig. 5 is a detail section showing the roller bearing upon the eccentrics.

Like numerals of reference refer to like parts in the several figures of the drawings. The numeral 10 designates the shaft of the pump head upon which the gears 11 and 12 are secured each being provided upon their adjacent faces with a cam 13 and upon their outer faces with a cam 14. The cams 13 are adapted to contact with an oval oscillating yoke 15 which is pivotally mounted at 16 upon a shaft 19 mounted in bearings 18 at one end of the frame 17.

The cams or eccentrics 14 are adapted to actuate yokes or beams 20 which are pivot- I ally mounted at 21 upon the shaft 19.

These beams are each provided with rods 22 having a bifurcated connection 23 therewith and are connected by a cross head 24 adapted to actuate a pump piston through the sleeve 25. The beam 15 is connected cams or eccentrics.

with a pump rod26 by means: of the .rateneeaouly.11,1911;

27 and the eccentrics carried by the gears are so disposed as to produce an alternationi 1n the direction of movement of thegme1n-5 bers carried by the sleeve 25 and pistonrod 26. The movement of these pa-rts'is;mainguide rod. 28- upon which a sleeve :29 -'from the rod 26 is mountedand also a sleeye 30 from the cross head 24:. This guide-rod is tained in a vertical plane by means of a mounted in suitable bearings 31 and'32 at its opposite ends. The gears '11 and 12 are.

driven from a shaft 33 by means of pinions 34 thereon, this shaft being provided with a driving pulley 35 of any ordinary construc-' tion to which power maybe applied through the belt 36 shown in Fig. 1.

Surrounding each of the eccentrics is a collar 37 which provides a bearing surface for the roller bearings 38 and these bearings are. inclosed within a loosely mounted ring 39 which is in frictional contact with the yokes or beams 15 and 20 so as 'to produce;

an oscillation thereof.in--the travel of the The collar 3'[ is se' cured to the eccentrics 1 1 while the collar upon the opposite eccentrics 13 issecured to one thereof at 40 and loosely mounted upon the opposite one sothat they can be taken apart easily or to compensate for any difference in travel or action between the beams 20 and the beam 15 and thus prevent distortion or friction in case the movement of the piston rods is not in a true or straight line.

As shown in Fig. 5, the roller bearings 38 .comprise a series'of rollers separated by be seen that the gears carrying the driving eccentrics are actuated from a single'sha-ft so as to secure a motion in unison and the beams or yokes surrounding these eccentrics are also mounted upon a common pivot, thus securing a parallel travel thereof and a direct application of power to the parts to be driven thereby. While an eccentric has been shown as the driving means for the beams, any mechanical equivalent. thereof may be substituted and the construction provides means for imparting simultaneous movement in opposite directions to any mechanism to be driven, for instanc a pump as shown. The roller bearing interposed between the eccentric and beam overcomes the friction due to a sliding bearing and provides amore efficient means for actuating the beams. It will, therefore, be seen that the invention presents a simple, efficien't and economically constructed form of pump head by which a plurality of beams are driven from parallel gears by providing the opposite faces of these gears with driving connections for the beams.

Having described my invention and set forth its merits, what I claim and desire to secure by Letters Patent is 1. In a pumping head, parallel gears each having driving eccentric means upon the inner and outer side faces thereof, an oscillating member disposed to engage the inner eccentric of each gear, a plurality of oscillating members engaging the outer eccentric of each gear, and driving connections from each of said members.

2. In a pumping head, parallel gears each having driving eccentric means upon the inner and outer side faces thereof, a beam disposed to engage the inner eccentric of each gear, a plurality of independently pivoted beams engaging the outer eccentric of each gear, and driving connections from said beams.

3. In a pumping head, parallel gears each having driving eccentrics upon the inner and outer faces thereof, a ring surrounding each of said eccentrics, roller bearings disposed between said rings and eccentrics, a pivoted yoke disposed to engage the ring embracing the inner eccentric of each gear, a plurality of independently pivoted yokes engaging the ring surrounding the outer ec centric of each gear, and driving connections from said yokes.

I. In a pumping head, a frame, a shaft mounted thereon, parallel gears secured to said shaft eccentrics disposedupon the opposite side faces of each of said gears, a driving shaft; provided. with pinions to rotate said gears in unison, a yoke beam embracing the adjacent eccentrics upon the inner faces of said gears, and independent yoke beams engaging the eccentrics upon the outer faces of said gears.

In testimony whereof I aflix my signature in presence of two Witnesses.

SAMUEL M. FULTON.

WV. A. MCCORMICK. 

